Separator for nonaqueous secondary battery, method for producing the same, and nonaqueous secondary battery
US7976987B2 · kind B2 · utility
3Cited by
0References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 13, 2008 |
| Grant date | Jul 12, 2011 |
| Priority date | — |
| Expiry date | Jun 13, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49115
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention is to provide a separator that is excellent in heat resistance, shutdown function, flame retardancy and handling property. The separator for a nonaqueous secondary battery of the invention is a separator for a nonaqueous secondary battery that has a polyolefin microporous membrane at least one surface of which is laminated with a heat resistant porous layer containing a heat resistant resin, and is characterized by containing an inorganic filler containing a metallic hydroxide that undergoes dehydration reaction at a temperature of 200 to 400° C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.